JP2006266953A - Fluorescence penetrant inspection system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make a flaw inspecting process automated and improve a flaw inspection in efficiency. <P>SOLUTION: A fluorescence penetrant inspection system is provided which comprises; a first conveying apparatus 71 which brings a cast W to be immersed in a fluorescence penetrant inspection liquid in an immersion tank 2 while holding it, and then conveys the cast W onto a standby base 3; a second conveying apparatus 72 which holds the cast W on the standby base 3 and conveys it into the cleaning atmosphere in a cleaning tank 4; and a conveyer 74 which conveys the cast W conveyed out of the cleaning atmosphere by the second conveying apparatus 72 into a developing apparatus 6 having a spraying chamber 63 for attaching development powder to the cast W and a removing chamber 64 for removing excessive development powder therefrom. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a fluorescent penetrating flaw detector, and more particularly to a fluorescent penetrating flaw detector that automates the flaw detection process.

In order to reliably detect wrinkles of a cast product generated in a casting process, a fluorescent penetrating flaw detection method is used. In this method, the fluorescent penetrating flaw detection liquid is adhered to the surface of the cast product by dipping or the like, and the flaw detection liquid is permeated into the bag from the cast product surface. After that, in order to wash off the excess flaw detection liquid other than the flaw detection liquid that has penetrated into the flaw, the developer is attached to the surface of the casting after drying, and the penetrant liquid in the flaw is sucked into the development film. Create a pattern. Since this indication pattern fluoresces under ultraviolet light, it is possible to surely detect fine wrinkles on the surface of the cast product by observing it. Patent Document 1 discloses a penetrating flaw detector provided with flaw detection liquid heating means and bubble vibration means so that a surface layer defect of an inspection object can be easily detected.
JP2003-156442A

  However, conventionally, the above-mentioned fluorescence penetrating flaw detection method has been carried out almost manually, and there has been a problem that the efficiency of flaw detection inspection is poor.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a fluorescence penetrating flaw detector capable of automating a flaw detection process and improving the efficiency of flaw detection inspection.

  In order to achieve the above object, in the first invention, the fluorescent penetrant flaw detection solution that has penetrated into the casting mold is sucked into the developing film to produce an indication pattern, which is observed under ultraviolet light. In the fluorescent penetrant flaw detector, a first transfer device (71) for holding the cast product (W) and immersing it in the fluorescent penetrant flaw detection solution, and then transporting the cast product (W) onto the stand (3); A second transfer device (72) for holding the cast product (W) placed on the stand (3) and transferring it to the cleaning atmosphere.

  In the first invention, the flaw detection liquid adheres to the surface of the casting product immersed in the fluorescent penetrating flaw detection solution, and the flaw detection solution penetrates from the casting product surface into the cage. Excess flaw detection liquid other than the flaw detection liquid that has penetrated into the tub is washed away in a cleaning atmosphere. In this way, the adhesion of the fluorescent penetrating flaw detection liquid and the removal of the excess flaw detection liquid are automated. Since the conveying device that holds the casting and immerses it in the fluorescent penetrant flaw detection solution and the conveying device that holds the casting and conveys it in the cleaning atmosphere are separated, the flaw detection liquid adheres to the casting and the excess cleaning liquid. Is efficiently cleaned.

  In the second aspect of the present invention, the cast product (W) carried out of the cleaning atmosphere by the second transport device (72) is applied to the casting product (W) with the spraying chamber (63) and excessive development. A third conveying device (74) for conveying the developing device (6) having at least a removal chamber (64) for removing powder is further provided.

  In the second aspect of the invention, the developing powder adheres to the surface of the cast product in the spraying chamber, and the penetrating liquid in the ridge is sucked into the developing film to generate an indication pattern. Then, excess developer powder is removed in the removal chamber. In this way, the adhesion of developer powder and the removal of excess developer powder are automated.

  In addition, the code | symbol in the said parenthesis shows the correspondence with the specific means as described in embodiment mentioned later.

  As described above, according to the fluorescence penetrating flaw detection apparatus of the present invention, the flaw detection process can be automated, so that the efficiency of flaw detection inspection can be improved.

  FIG. 1 is an overall perspective view of the fluorescence penetrating flaw detector. In the figure, the fluorescent penetrating flaw detector comprises a front pallet stand 1 arranged in a row, an immersion tank 2 filled with a fluorescent penetrant flaw detection liquid, a standby stand 3, a washing tank 4, a rear pallet stand 5, and a developing device 6. The developing device 6 includes a preliminary drying chamber 61, a drying chamber 62, a spraying chamber 63, and a removal chamber 64 from the side close to the pallet stand 5. The developing device 6 includes an elevator door between the drying chamber 62 and the spray chamber 63, an elevator door between the spray chamber 63 and the removal chamber 64, and an elevator door between the removal chamber 64 and the outside air. Mechanisms 65-67 are provided.

  The 1st conveyance apparatus 71 is provided and it can move among these on the pallet stand 1, the immersion tank 2, and the stand 3 along the guide rail which is not illustrated. Moreover, the 2nd conveying apparatus 72 is provided and it can move among these in the upper direction of the standby stand 3, the washing tank 4, and the pallet stand 5 along a guide rail not shown.

 The pallet PL placed on the rear pallet table 5 is sent to the preliminary drying chamber 61, the drying chamber 62, the spraying chamber 63, and the removal chamber 64 of the developing device 6 by a conveyor 74 that is a third transport device. The first and second transfer devices 71 and 72 each have a gripping arm 73 that can be moved up and down and rotated in the left and right positions, and each gripping arm 73 is provided with a pair of gripping claws 731 at the lower end. .

 The castings W placed in the left and right multiple rows on the pallet PL on the front pallet stand 1 are sandwiched by the gripping claws 731 of the gripping arms 73 of the first transporting device 71 and transported to the immersion tank 2. Here, after being immersed in the fluorescence penetrant flaw detection liquid, it is transferred onto the stand 3. The casting W placed on the stand 3 is sandwiched by the gripping claws 731 of the gripping arms 73 of the second transport device 72 and is put into the tank from the left and right openings 41 of the cleaning tank 4. As shown in FIG. 2, cleaning nozzles 42 and 43 are provided in the cleaning tank 4 on the lower side and the side, and high-pressure hot water is sprayed toward the casting W that is gripped and rotated by the gripping claws 731. Excess flaw detection liquid adhering to the surface of the casting W is removed. The washed cast products W are transferred by the second transport device 72 to the pallet PL on the rear pallet table 5 so as to be arranged in a plurality of left and right rows.

 The pallet PL on which the cast product W is placed is carried into the developing device 6 by the conveyor 74, and the moisture adhering to the surface of the cast product W is evaporated and dried in the preliminary drying chamber 61 and the drying chamber 62. . In the spraying chamber 63 of the developing device 6, as shown in FIG. 3, the developer powder DP is swung up by the blowing of air supplied to the air header 68 (white arrow in the figure), and while passing through the spraying chamber 63. The developer powder DP adheres to the surface of the cast product W on the pallet PL, and a developed film is generated. In the removal chamber 64, as shown in FIG. 4, the air supplied to the air header 69 is blown onto the casting W on the pallet PL that passes therethrough, and excess developer powder is removed. The casting product W taken out from the developing device 6 is irradiated with ultraviolet rays in the inspection device, and an indication pattern generated in the developing film is observed, and the presence or absence of wrinkles is inspected.

1 is an overall perspective view of a portable fluorescent penetrating flaw detector showing an embodiment of the present invention. It is a principal part side view of a washing | cleaning apparatus. It is a schematic sectional drawing of a dispersion chamber. It is a schematic sectional drawing of a removal chamber.

Explanation of symbols

DESCRIPTION OF SYMBOLS 2 ... Immersion tank, 3 ... Standby stand, 4 ... Cleaning tank, 6 ... Developing device, 63 ... Dispersion chamber, 64 ... Removal chamber, 71 ... 1st conveyance device, 72 ... 2nd conveyance device, 74 ... Conveyor, W ... Casting product.

Claims (2)

The fluorescent penetrant flaw detection liquid that has penetrated into the castings of the cast product is sucked into the developing film to produce an indication pattern, and the fluorescent penetrant flaw detector is designed to observe this under ultraviolet light. A first transport device that transports the cast product onto a standby table after being immersed in a penetrant flaw detection liquid, and a second transport that holds the cast product placed on the standby table and transports the cast product into a cleaning atmosphere. Fluorescence penetrating flaw detector comprising the apparatus. Third transport for transporting the cast product carried out from the cleaning atmosphere by the second transport device to a developing device having at least a spraying chamber for attaching developer powder to the cast product and a removal chamber for removing excess developer powder. The fluorescence penetrating flaw detector according to claim 1, further comprising a device.

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